I have 3 X 5 kW Sunsynk inverters bought over a period of serveral years. This gives me 6 X MPPTs, 4 of which I used to connect 48 X 250 W panels several years ago. I got the 3rd 5 kW Sunsynk inverter so that I could connect an additional 10 X 650 W, which is the maximum I can connect to the two MPPTs on a Sunsynk inverter. As I already had two 5 kW Sunsynk inverters with 48 X 250 W i.e 12 kW of solar panels connected, this was the most cost-effective way to get to my current total solar panel output of 18.5 kW, which I needed to go completely off grid with two fully electric EVs. I have had no issues getting the three Sunsynk inverters to work as a team.